Inspiron E1705/9400 Sigmatel 9200 HD Audio Driver

I'm having trouble tacking down an audio driver for my Dell Inspiron E1705/9400. It has a Sigmatel 9200 HD Audio Codec.

As Indicated from device manager
HDAUDIO\FUNC_01&VEN_8384&DEV_7690&SUBSYS_102801CD&REV_1022

VEN 8384 - Sigmatel
DEV 7690 -9200 HD Audio Codec
SUBSYS 102801 - Dell

The audio card is able to output sound however while playing back any prolonged audio, ie music, the playback is unacceptably interrupted with digital artifacts such as skips and pops. This behavior is experienced using a variety of drivers. All drivers have been uninstalled using device manager and then the system has been rebooted before installing the next driver. Also all of the other dell recommended drivers have been installed without a hitch. Finally all windows patches are up to date.

I started with the driver provided by Microsoft and continued to try the recommended driver from dell, R171788. I have also tried the following additional driver packages from dell, R108276, R147073, and R171789.

Additional Information:
OS: Windows 7 x86 Home Premium
Dell Service Tag: BSCDK91

Thank you for any input!

@FZ21Z thank you for the response, unfortunately the driver you suggested doesn't improve the card's sound quality.

Also I forgot to mention that the same machine had no audio problems under the windows 7 release candidate. The RC was set up with the recommended vista drivers from dell.

The audio drivers posted on Dell's web site for Vista will work. I am running the 64 bit version of Windows 7 so I selected the 64 bit Vista drivers. Audio is working correctly. My sound card is made by Sigmatel.